Its a card advantage engine and a powerful finisher
In addition to its rarity, Arthur is quite strong, with an ability that is likely to be leveraged by many serious Lorcana players
The Construct token is a nasty threat, Urza generates a bunch of mana and can be an infinite mana outlet or just a mana sink to keep the gas flowing, and we cant ignore the synergy with Winter Orb
$0.49 Summon: Anima Final Fantasy $0.49 Barret Wallace Final Fantasy $0.49 Reno and Rude Final Fantasy $0.49 Vincent's Limit Break Final Fantasy $0.49 Gilgamesh, Master-at-Arms Final Fantasy $0.79 Overkill Final Fantasy $0.99 Zenos yae Galvus Final Fantasy $0.49 Evil Reawakened Final Fantasy $0.79 Jill, Shiva's Dominant Final Fantasy $0.49 Phantom Train Final Fantasy $1.49 Ninja's Blades Final Fantasy $0.49 Lion Heart Final Fantasy 0 results found
These two together allow you to play additional lands, slow down your opponents, and draw cards
Nissa can make turn four or five Eldrazi happen, and not just the turdy cheap ones, things like Ulamog and Kozilek